Type-writer.



PATENTEU OCT. 8, 1907.

L. R. ROBERTS.

v TYPE WRITER. APPLIOATION IILED JULY 14, 1906.

INVENTOR I S MMW. RM

0 4mm I WITNESSFS Attorneys;

LYMAN R. ROBERTS, OF DETROIT, MICHIGAN.

- TYPE-WRITER;

To all whom it may concern:

Be it known that}, LYMAN R. ROBERTS, a citizen of the United States, residing at Detroit, county of Wayne,

State of' Michigan, have invented a certain new and useful Improvement in Type-Writers, and declare the "following tobea full, clear, and exact description of the same, such as will enable othersskilled in the art to which it pertains to make andus e thevsame, reference being had to the accompanying drawings; which form a part of this specification. This invention relates to typewriters; it has for its vobject an improved bearing for the platen or roll,

against which the type'strikes .The object of the improvement is to produce a bear ing such that the platen may be held securely in place while innse, but may be at once lifted off from its bear- I ing and removed from the carriage when it is desired and the platen in elevation.

from '2 to to so remove it.

The drawing shows the upper part of the carriage 1, indicates an end frame of the shifting saddle upon the carriage of a typewriter; this has a bearing 2 in which rest the projecting-end of the arbor3 of the typewriter roll 4. I The arbor-3 is held in bearings in a plate 5 which forms one end of the cage of the typewriter platen. A bar 6 parallel to the arbor 3 forms a tie rod of the cage. The arbor 3 rests in the bearings 2 and the rod 6 rests in a bearing 7; both bearings are in the end plate of the saddle part of the main carriage. Similar bearings are formed at the opposite end of the saddle for the further end of the arbor 3 and the rod 6.

The bearing 2 is at the bottom of a slot like opening which is cnrved around a center which is at. the axis or center of the rod 6. The bearing 7 is at the bottom of an opening which is inclined to a horizontal line Specification of Letters Patent.

Application filed ly 14, 1906- Seriiil NO- 326,169.

7 and may be considered as substantially Patented Oct. 8, 190'}.

along a radius of the curvature of the slot at the bottom of which is the bearing 2. It is not essential that the incline should be such that the opening is exactly on a-radial line nor is it in fact shown so in the drawing.

.The essential requisite being that when both the arbor 3 and the rod 6 are at rest in their bearings; the two shall be secured against any movement except a turning or swinging movement of the arbor 3 about the rod fiasacenterf l v v To remove the platen from its rest in the saddle, it

is first lifted to swing the platen and its arbor around the rod .6 as a center until the arbor clears the horn 9, after which the entire platen may be lifted, lifting the, rod 6 away from its bearing.

What I claim is I 1. In a typewriter, in combination with a platen pro vided with an ,arbor and a counter-shaft fixedly spaced thereby the one from the-other, a typewriter carriage, a

saddle thereon, provided with a bearing for said arbor having a curved groove opening intosald bearing from above, a bearing for said, counter-shaft. having a groove opening into said b ring and inclined to coincide approxL mately with a radius of the curvature of said first mentioned groove being located on the concaved side thereof,

whereby the bearings for thetwo shafts rest normally on diverging surfaces, substantially as described.

2. In a. typewriter, in combination with a platen frame provided with a platen arbor and a counter-shaft whosedistance the one from the other is invariable, bearings for the said platen arbor and counter shaft having slots leading thereinto from above, the slot for said arbor being curved around the normal center of the counter sh'aft when located in its bearing, the slot for said counter-shaft leading into said bearing on an incline from above downward, substantially as described.

In testimony whereof I sign this specification in the presence of two witnesses.

' 'LYMAN R. ROBERTS. Witnesses:

CHARLES E. BURTON, Lemur Len HAY'roN. 

